Ardha Matseyndrasana gets its name from four Sanskrit words, that are Ardha, Matsya, Indra and Asana which respectively mean Half, Fish, Lord or king and Pose.
Also known as the half spinal twist pose, it is one of the twelve basic asanas in Hatha Yoga. When done regularly, it helps to strengthen the spine and stimulate the digestive system.
This article talks about the correct way to practice Ardha Matseyndrasana and also tells you about its benefits and precautions that need to be taken while practising it.